• Journal of Navigation and Port Research
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• v.40 no.3
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• pp.89-95
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• 2016

S-Mode is a concept involving a standardized navigation display with accompanying standardized functionality and interfaces for navigational equipment. It was proposed by the International Federation of Shipmasters' Associations at IMO NAV $54^{th}$ session in 2008. The IMO e-Navigation Strategy Implementation Plan(SIP) addresses, S-Mode and the IMO MSC at its $95^{th}$ session in 2015 approved an output 1 to develop S-Mode guidance. In this study, it has been carried out survey of user needs for adopting S-Mode guideline on ECDIS which is core navigational equipment. It is conducted with a questionnaire survey, targeting deck officers and masters who will be the primary users of the equipment related to the e-Navigation system. In this research, users' opinion survey regarding the necessity of development, the scope of standardization, and priorities was conducted. This survey result could be contributed to development S-Mode guideline and specify the concept of S-Mode. It would be derived from standardizing component through providing elements to be considered for its development.

• The KIPS Transactions:PartD
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• v.18D no.3
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• pp.149-156
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• 2011

Recently, enterprise systems require the necessity of integration for data sharing and cooperation. As a methodology for integration, Service-Oriented Architecture for service integration and Master Data for integration of data, which is used for service, were appeared. This paper suggests a method that operates BP(Business Process) efficiently. We make XMDR(eXtended Meta Data Registry) as knowledge-repository to support the BP and construct data hubs to operate it. XMDR manages MDM(Master Data Management) to integrate the data, resolves heterogeneity between the data and provides relationship to the business efficiently. This is composed of MDR(Meta Data Registry), ontology and BR(Business Relations). MDR describes relationship between meta data to solve structured heterogeneity. Ontology describes semantic heterogeneity and relationship between data. BR describes relationship between tasks. XMDR data hub supports the management of master data and interaction of different process effectively.

• KIPS Transactions on Computer and Communication Systems
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• v.8 no.12
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• pp.277-286
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• 2019

The Unmanned Aerial Vehicle (UAV) is one of the most precious inventions of Internet of things (IOT). UAV faces the necessity to charge battery or replace battery from the charging stations during or between services. We propose scheduling algorithms for drone power charging (SADPC). The basic idea of algorithm is considering both a deadline (for increasing deadline miss ratio) and a charging time (for decreasing waiting time) to decide priority on charging station among drones. Our simulation results show that our power charging algorithm for drones are efficient in terms of the deadline miss ratio as well as the waiting time in general in compare to other conventional algorithms (EDF or SJF). Also, we can choose proper algorithms for battery charge scheduling and charge ready battery allocation according to system parameters and user requirements based on our simulation.

• Journal of Information Management
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• v.25 no.2
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• pp.31-60
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• 1994

General branches of science and engineering now enjoy being substantially repleted in their databases. However, comparing the databases of such branches with chemistry or medical science and pharmacology, the strata do not seem to be fully equipped yet. As a matter of fact, the variety of such databases in practical application is still somewhat limited. Moreover, these databases are, with a few exceptions, prepared abroad. In this paper varieties and features of databases now available on the market for each database service system, as well as crucial points for practical use are introduced. At present, it is focussed more or less on the application of bibliographical information. Yet, it would be inevitable to equip them with factual data in order to increase the efficiency of research and development activities. Of course, it is still not easy to solve problems for better profitability and higher technical achievement. The author wishes to emphasize the necessity to fully equip the commercial factual database for said branches as quickly as possible.

• Journal of Information Management
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• v.39 no.2
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• pp.95-130
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• 2008

This article intends to provide a direction for reconstructing the national regime of archival appraisal in electronic record environments. Functional appraisal, which inevitably carries out for appraising electronic records, has defects in aspect of selecting archives important in a national point of views. To do so, this article discusses defects of functional appraisal, and then suggests the necessity of archival appraisal strategies that complements functional appraisal. To investigate this archival appraisal strategies, it analyzes Australia's Whole-of-Government Functional Analysis, United Kingdom's Acquisition Policy and Appraisal Policy, Germany's Cooperative Cross-Archives Appraisal and Canada's Macro Appraisal. Ultimately, this analysis is able to establish a base of the regime of archival appraisal which will harmonize primary value at current stage with secondary value at non-current stage in a national point of views.

• Journal of Elementary Mathematics Education in Korea
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• v.24 no.2
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• pp.207-229
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• 2020

The study examined on the general educational system, the structure of the document of mathematical curriculum, and the characteristics of the achievement standards written in the document of France in order to compare with Korean primary mathematics education. French pupils learn about 5% more hours than Korean sixth grade pupils, and French document of mathematical curriculum describes the contents included in the documents more concretely than us. There were a large differences in the subjects both of mixed calculations and division of fractions in the area of number and operations. The study proposed the necessity for researches on the concrete description of the document of mathematical curriculum, more concrete examples to use to teach pupils on the viewpoints of school mathematics, and the learning sequences and methods of the division of fractional numbers. At last we proposed to need rethink of the importances and teaching methods of calculations.

• The Journal of the Korea Contents Association
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• v.17 no.9
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• pp.310-323
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• 2017

The purpose of this study is to provide necessary data and information in order to support economic activity of career interrupted woman by analysis the differences between seeking work need on individual characteristic and re-employment need of job-seeking activities. This study includes the result of reviewing a prospective study and an enpinical analysis based on the theoretical background of career interrupted woman, vocational education, individual characteristic and re-employment need to achieve its goal. The collected data from 150 career interrupted women who had a vocational education was analyzed by one-way analysis of variance, T-verification and SPSS 12.0v program. In summary of this study, re-employment need would be different by individual characteristic, seeking work need and job-seeking activities. It shows that the method of re-employment should be provided as considering the individual characteristic of career interrupted woman. Therefore, this study suggests the necessity of suited education and improved system for individual characteristic of career interrupted woman.

• Journal of the Korean Society for information Management
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• v.28 no.1
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• pp.171-193
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• 2011

This study aims to analyse the necessity of the subject heading construction for the word based classification and to suggest a methodology that uses various knowledge organization systems(KOS). For this purpose, six kinds of KOS were collected for the 20 selected works in each subject. The collected subjects were analysed in terms of constructing a subject heading for the word based classification. The result of the analysis shows that there is a noticeable difference between the library oriented KOS and commercial oriented KOS. In addition, user oriented tags are more similar to the commercial sector's concerning subject categorization than the library oriented ones. However, there is no noticeable difference among the library oriented KOS, commercial sector oriented KOS, and user oriented tags regarding the subject vocabulary. Some practical implications were suggested for the application to the Korean libraries based on the findings of this study.

• Journal of the Society of Disaster Information
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• v.13 no.4
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• pp.413-421
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• 2017

This study intends to conduct a thorough research and analysis on the designated temporary residential facilities for the disaster victims in order to bridge the gap between the temporary residential facilities for the disaster victims in country and city, and understand the current status of the designated temporary residential facilities for the disaster victims in rural and urban areas. As a result, the designated temporary residential facilities for the disaster victims in urban areas are bigger and have higher capacity, implying the necessity to designate facilities in rural areas that can accommodate larger number of people. As to the analysis of the representative temporary residential facilities for the disaster victims in rural areas, different regions had different types of designated facilities and the number of facilities also showed big difference depending on regions. So it is believed that local governments should improve the process and system of designating temporary residential facilities for the disaster victims.

• Journal of the Society of Disaster Information
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• v.14 no.3
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• pp.343-351
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• 2018

Purpose: Recently, As the size of the structure increased, the necessity of reducing its weight was raised. To reduce weight In concrete structures, a hollow slab is proposed as an alternative for weight reduction effect. Method: It is difficult to construct the hollow body due to buoyancy, and the shear performance is insufficient due to the decreased cross section. Slabs were fabricated using unidirectional hollow bodies such as PVC pipes, and experiments were conducted about construction performance and structural performance. Results: The buoyancy preventive device has been improved the construction performance by preventing floating hollow body, it has been confirmed that it has adequate performance to be used as a hollow slab system because it has enough expected shear performance. Coclusion: Hollow ratio has a little connection with bending performance, but after the yielding load, it is necessary to consider the secondary stiffness of structure, and is is supposed that the decrease of shear performance with the increase of hollow core ratio can be complemented with shear reinforcement.